12158245 has 8 divisors (see below), whose sum is σ = 15916320. Its totient is φ = 8842320.

The previous prime is 12158239. The next prime is 12158257. The reversal of 12158245 is 54285121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12158245 - 2⁷ = 12158117 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110475 + ... + 110584.

It is an arithmetic number, because the mean of its divisors is an integer number (1989540).

Almost surely, 2^12158245 is an apocalyptic number.

It is an amenable number.

12158245 is a deficient number, since it is larger than the sum of its proper divisors (3758075).

12158245 is a wasteful number, since it uses less digits than its factorization.

12158245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221075.

The product of its digits is 3200, while the sum is 28.

The square root of 12158245 is about 3486.8675053693. The cubic root of 12158245 is about 229.9448197808.

It can be divided in two parts, 12158 and 245, that added together give a triangular number (12403 = T₁₅₇).

The spelling of 12158245 in words is "twelve million, one hundred fifty-eight thousand, two hundred forty-five".